No one else was home when the man was found about 11:15 p.m. Thursday. police said the stabbing may have resulted from some type of domestic dispute between Alexander and the grandson of his girlfriend.

The girlfriend was out of town at the time of the dispute and was returning home early Friday morning, police said.

A burst of thunderstorm activity across the Chicago area in Sunday afternoon resulted in multiple injuries and a death at an event in west suburban Wood Dale, the collapse of a dome in northwest suburban Rosemont and the temporary evacuation of the music festival Lollapalooza in Grant Park downtown.